.message-box{
    height: 100%;
    width: 100%;
    display: inline;
}
.header{
    height: 49px;
    width: 100%;
    border-bottom: solid 1px #dedede;
    line-height: 49px;
    padding-left: 25px;
}
.contant{
    padding: 0 25px;
    height:  calc(100% - 80px);
    width: 100%;
    overflow-y: auto;
    display: inline-block;
    .item{
        min-height: 77px;
        width: 100%;
        border-radius: 3px;
        background: #fafafa;
        margin-top: 12px;
        padding: 20px 10px;
        font-size: 14px;
        .time{
            color: #9a9a9a;
        }
        .message{
            margin-top: 10px;
        }
    }
}